<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>初始Vue</title>
    <!--引入Vue-->
    <script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>
<!--准备好一个容器-->
<div class="root">
    姓：<input type="text" v-model="firstName">
    <br/>
    名：<input type="text" v-model="lastName">
    <br/>
    全名：<span>{{fullName}}</span>
</div>


<script type="text/javascript">
    Vue.config.productionTip = false //阻止Vue在启动时生成生成提示

    const vm = new Vue({
        el: '.root',
        data: function () {
            return {
                firstName: '张',
                lastName: '三'
            }
        },
        computed: {
            //简写
            fullName: function (value) {
                return this.firstName + '-' + this.lastName;

            }
        }


    })


</script>
</body>
</html>